Question

The mark scored by 40 candidates in an examination (out of 100 ) is given below .
75 , 65 , 57 , 50 , 32 , 54 , 67 , 75 ,88 , 80 , 42 , 40 , 41 , 34 , 61 , 42 , 46 , 68 , 52 , 43 , 49 , 59 , 49, 67 , 34 , 33 , 87 , 97 , 47 , 46 , 54 , 48 , 45 , 51 , 47 , 41 , 43 .
Prepare a frequency distribution table with the class size 10 . Take the class intervals as 30 - 39 , 40 - 49 and answer the following questions .
Which class intervals have highest and lowest frequency .

Answer 1

The class interval $40-49$ has highest frequency and $90-99$ has the lowest frequency .